- Descrito por / Described by: Vinicius A. Bertaco & Luis R. Malabarba, 2005
- Nome original / Original name: Hyphessobrycon hamatus
- Nome do artigo / Article name: A new species of Hyphessobrycon (Teleostei: Characidae) from the upper rio Tocantins drainage, with bony hooks on fins.
- Publicado em / Published in: Neotropical Ichthyology v. 3 (no. 1): 83-88.
- Localidade tipo / Type locality: Tributários do rio Vermelho, Goiás, Brasil. / Tributaries of Vermelho River, Goiás, Brazil.
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